My tablet works fine the micro SD card slot also works I would send the tablet back to have it repaired if your having issues with the SD slot for extra memory everything should work on a new tablet that's what the warranty is for

BATTERY ISSUES:
How I alleviate battery drain issues is to charge unit to 100% charge. Then connect to a good quality external charge battery or supplied charger; Even on highest brightness the battery does not drain. You must start with 100% charge or reduce brightness down to about 1/2 for this to work. I've owned my tab about 2 yrs. with only one issue when due to an upgrade the screen mirroring feature got whacked but it was fixed. Love this thing very satisfied!

Dipu1233444223, 15 Apr 2016Can't we call from it.Hai goodevening to all,
I have Samsung Tab EB-BT 530 It was not on since last month how can I repairs it, and it was not have any sim facility any possible to use sim in that device.

Jeanyj47, 18 Mar 2016Could anyone tell me If it's possible to put a SD Card for extra storage into a Samsung Tab4,1... moreYep! You can insert a sim card or micro sd into the microsd slot found at the top.